21053942

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3989}}^1$

素因数の和:4040

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 19165258

約数列:

[1, 2, 7, 13, 14, 26, 29, 58, 91, 182, 203, 377, 406, 754, 2639, 3989, 5278, 7978, 27923, 51857, 55846, 103714, 115681, 231362, 362999, 725998, 809767, 1503853, 1619534, 3007706, 10526971, 21053942]

約数ペア:

[(1, 21053942), (2, 10526971), (7, 3007706), (13, 1619534), (14, 1503853), (26, 809767), (29, 725998), (58, 362999), (91, 231362), (182, 115681), (203, 103714), (377, 55846), (406, 51857), (754, 27923), (2639, 7978), (3989, 5278)]